Remove reference to Grail and Netscape 2.0 from cgi docs.

Doc/lib/libcgi.tex

@@ -36,8 +36,7 @@ the ``query string'' part of the URL.  This module is intended
 to take care of the different cases and provide a simpler interface to
 the Python script.  It also provides a number of utilities that help
 in debugging scripts, and the latest addition is support for file
-uploads from a form (if your browser supports it --- Grail 0.3 and
-Netscape 2.0 do).
+uploads from a form (if your browser supports it).
 
 The output of a CGI script should consist of two sections, separated
 by a blank line.  The first section contains a number of headers,